/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:39:45,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:39:45,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:39:45,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:39:45,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:39:45,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:39:45,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:39:45,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:39:45,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:39:45,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:39:45,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:39:45,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:39:45,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:39:45,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:39:45,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:39:45,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:39:45,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:39:45,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:39:45,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:39:45,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:39:45,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:39:45,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:39:45,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:39:45,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:39:45,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:39:45,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:39:45,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:39:45,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:39:45,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:39:45,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:39:45,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:39:45,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:39:45,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:39:45,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:39:45,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:39:45,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:39:45,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:39:45,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:39:45,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:39:45,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:39:45,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:39:45,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:39:45,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:39:45,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:39:45,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:39:45,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:39:45,266 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:39:45,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:39:45,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:39:45,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:39:45,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:39:45,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:39:45,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:39:45,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:39:45,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:39:45,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:39:45,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:39:45,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:39:45,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:39:45,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:39:45,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:39:45,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:39:45,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:39:45,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:39:45,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:39:45,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:39:45,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:39:45,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:39:45,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:39:45,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:39:45,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:39:45,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:39:45,706 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:39:45,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-12-23 10:39:45,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/658f49e50/02a2878b06704cf181c3a6e99a75b812/FLAGc1f98b994 [2020-12-23 10:39:46,453 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:39:46,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-12-23 10:39:46,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/658f49e50/02a2878b06704cf181c3a6e99a75b812/FLAGc1f98b994 [2020-12-23 10:39:46,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/658f49e50/02a2878b06704cf181c3a6e99a75b812 [2020-12-23 10:39:46,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:39:46,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:39:46,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:39:46,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:39:46,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:39:46,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:39:46" (1/1) ... [2020-12-23 10:39:46,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c548f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:46, skipping insertion in model container [2020-12-23 10:39:46,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:39:46" (1/1) ... [2020-12-23 10:39:46,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:39:46,883 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6144~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6207~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_6276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2020-12-23 10:39:47,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7067,7080] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6290~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6445~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:39:47,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:39:47,287 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6067~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6144~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6207~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_6276~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2020-12-23 10:39:47,356 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7067,7080] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6234_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6290~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6445~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6277_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2020-12-23 10:39:47,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:39:47,420 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:39:47,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47 WrapperNode [2020-12-23 10:39:47,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:39:47,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:39:47,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:39:47,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:39:47,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:39:47,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:39:47,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:39:47,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:39:47,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... [2020-12-23 10:39:47,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:39:47,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:39:47,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:39:47,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:39:47,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:39:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:39:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:39:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:39:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:39:48,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:39:48,847 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:39:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:39:48 BoogieIcfgContainer [2020-12-23 10:39:48,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:39:48,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:39:48,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:39:48,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:39:48,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:39:46" (1/3) ... [2020-12-23 10:39:48,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27873bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:39:48, skipping insertion in model container [2020-12-23 10:39:48,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:39:47" (2/3) ... [2020-12-23 10:39:48,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27873bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:39:48, skipping insertion in model container [2020-12-23 10:39:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:39:48" (3/3) ... [2020-12-23 10:39:48,865 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-12-23 10:39:48,875 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:39:48,881 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:39:48,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:39:48,928 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:39:48,928 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:39:48,929 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:39:48,929 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:39:48,929 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:39:48,929 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:39:48,929 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:39:48,929 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:39:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-12-23 10:39:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 10:39:48,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:48,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:48,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:48,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1935961454, now seen corresponding path program 1 times [2020-12-23 10:39:48,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:48,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163376710] [2020-12-23 10:39:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:49,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163376710] [2020-12-23 10:39:49,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:49,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:49,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279545350] [2020-12-23 10:39:49,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:49,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:49,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:49,433 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-12-23 10:39:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:49,571 INFO L93 Difference]: Finished difference Result 286 states and 465 transitions. [2020-12-23 10:39:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:49,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-23 10:39:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:49,611 INFO L225 Difference]: With dead ends: 286 [2020-12-23 10:39:49,612 INFO L226 Difference]: Without dead ends: 218 [2020-12-23 10:39:49,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-23 10:39:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2020-12-23 10:39:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-23 10:39:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2020-12-23 10:39:49,683 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 49 [2020-12-23 10:39:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:49,684 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2020-12-23 10:39:49,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2020-12-23 10:39:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:39:49,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:49,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:49,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:39:49,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:49,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1118200662, now seen corresponding path program 1 times [2020-12-23 10:39:49,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:49,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919396644] [2020-12-23 10:39:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:49,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919396644] [2020-12-23 10:39:49,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:49,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:49,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207069730] [2020-12-23 10:39:49,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:49,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:49,854 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand 3 states. [2020-12-23 10:39:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:49,935 INFO L93 Difference]: Finished difference Result 522 states and 789 transitions. [2020-12-23 10:39:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:49,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-23 10:39:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:49,940 INFO L225 Difference]: With dead ends: 522 [2020-12-23 10:39:49,940 INFO L226 Difference]: Without dead ends: 370 [2020-12-23 10:39:49,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-12-23 10:39:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2020-12-23 10:39:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-12-23 10:39:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 545 transitions. [2020-12-23 10:39:49,998 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 545 transitions. Word has length 52 [2020-12-23 10:39:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:49,999 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 545 transitions. [2020-12-23 10:39:49,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 545 transitions. [2020-12-23 10:39:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:39:50,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:50,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:50,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:39:50,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1570903849, now seen corresponding path program 1 times [2020-12-23 10:39:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:50,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318377139] [2020-12-23 10:39:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:50,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318377139] [2020-12-23 10:39:50,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:50,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:50,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166189236] [2020-12-23 10:39:50,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:50,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:50,104 INFO L87 Difference]: Start difference. First operand 368 states and 545 transitions. Second operand 3 states. [2020-12-23 10:39:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:50,178 INFO L93 Difference]: Finished difference Result 884 states and 1325 transitions. [2020-12-23 10:39:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:50,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-23 10:39:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:50,184 INFO L225 Difference]: With dead ends: 884 [2020-12-23 10:39:50,184 INFO L226 Difference]: Without dead ends: 628 [2020-12-23 10:39:50,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-12-23 10:39:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2020-12-23 10:39:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-12-23 10:39:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 919 transitions. [2020-12-23 10:39:50,226 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 919 transitions. Word has length 52 [2020-12-23 10:39:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:50,227 INFO L481 AbstractCegarLoop]: Abstraction has 626 states and 919 transitions. [2020-12-23 10:39:50,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 919 transitions. [2020-12-23 10:39:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 10:39:50,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:50,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:50,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:39:50,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1320706551, now seen corresponding path program 1 times [2020-12-23 10:39:50,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:50,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759506242] [2020-12-23 10:39:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:50,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759506242] [2020-12-23 10:39:50,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:50,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:39:50,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284783597] [2020-12-23 10:39:50,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:39:50,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:39:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:50,351 INFO L87 Difference]: Start difference. First operand 626 states and 919 transitions. Second operand 3 states. [2020-12-23 10:39:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:50,503 INFO L93 Difference]: Finished difference Result 1644 states and 2427 transitions. [2020-12-23 10:39:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:39:50,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-23 10:39:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:50,519 INFO L225 Difference]: With dead ends: 1644 [2020-12-23 10:39:50,519 INFO L226 Difference]: Without dead ends: 1106 [2020-12-23 10:39:50,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:39:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-12-23 10:39:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2020-12-23 10:39:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-12-23 10:39:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1589 transitions. [2020-12-23 10:39:50,655 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1589 transitions. Word has length 52 [2020-12-23 10:39:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:50,656 INFO L481 AbstractCegarLoop]: Abstraction has 1104 states and 1589 transitions. [2020-12-23 10:39:50,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:39:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1589 transitions. [2020-12-23 10:39:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:39:50,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:50,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:50,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:39:50,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1834372633, now seen corresponding path program 1 times [2020-12-23 10:39:50,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:50,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656222009] [2020-12-23 10:39:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:50,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656222009] [2020-12-23 10:39:50,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:50,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:50,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112108197] [2020-12-23 10:39:50,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:50,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:50,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:50,788 INFO L87 Difference]: Start difference. First operand 1104 states and 1589 transitions. Second operand 5 states. [2020-12-23 10:39:51,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:51,077 INFO L93 Difference]: Finished difference Result 3406 states and 4991 transitions. [2020-12-23 10:39:51,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:51,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-12-23 10:39:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:51,094 INFO L225 Difference]: With dead ends: 3406 [2020-12-23 10:39:51,094 INFO L226 Difference]: Without dead ends: 2732 [2020-12-23 10:39:51,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:39:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2020-12-23 10:39:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1311. [2020-12-23 10:39:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-12-23 10:39:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1898 transitions. [2020-12-23 10:39:51,250 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1898 transitions. Word has length 53 [2020-12-23 10:39:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:51,251 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1898 transitions. [2020-12-23 10:39:51,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1898 transitions. [2020-12-23 10:39:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 10:39:51,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:51,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:51,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:39:51,259 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1785989049, now seen corresponding path program 1 times [2020-12-23 10:39:51,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:51,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421150957] [2020-12-23 10:39:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:51,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421150957] [2020-12-23 10:39:51,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:51,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:51,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780780589] [2020-12-23 10:39:51,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:39:51,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:51,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:39:51,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:51,436 INFO L87 Difference]: Start difference. First operand 1311 states and 1898 transitions. Second operand 6 states. [2020-12-23 10:39:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:52,039 INFO L93 Difference]: Finished difference Result 3926 states and 5704 transitions. [2020-12-23 10:39:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:52,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-23 10:39:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:52,055 INFO L225 Difference]: With dead ends: 3926 [2020-12-23 10:39:52,056 INFO L226 Difference]: Without dead ends: 2693 [2020-12-23 10:39:52,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:39:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2020-12-23 10:39:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2669. [2020-12-23 10:39:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-12-23 10:39:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3860 transitions. [2020-12-23 10:39:52,290 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3860 transitions. Word has length 53 [2020-12-23 10:39:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:52,290 INFO L481 AbstractCegarLoop]: Abstraction has 2669 states and 3860 transitions. [2020-12-23 10:39:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:39:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3860 transitions. [2020-12-23 10:39:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:39:52,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:52,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:52,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:39:52,293 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:52,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1176645599, now seen corresponding path program 1 times [2020-12-23 10:39:52,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:52,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179392255] [2020-12-23 10:39:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:52,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179392255] [2020-12-23 10:39:52,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:52,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:39:52,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930669473] [2020-12-23 10:39:52,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:52,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:52,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:52,421 INFO L87 Difference]: Start difference. First operand 2669 states and 3860 transitions. Second operand 5 states. [2020-12-23 10:39:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:53,084 INFO L93 Difference]: Finished difference Result 6346 states and 9163 transitions. [2020-12-23 10:39:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:53,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 10:39:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:53,105 INFO L225 Difference]: With dead ends: 6346 [2020-12-23 10:39:53,105 INFO L226 Difference]: Without dead ends: 3764 [2020-12-23 10:39:53,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:39:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2020-12-23 10:39:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 2669. [2020-12-23 10:39:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-12-23 10:39:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3822 transitions. [2020-12-23 10:39:53,386 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3822 transitions. Word has length 54 [2020-12-23 10:39:53,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:53,388 INFO L481 AbstractCegarLoop]: Abstraction has 2669 states and 3822 transitions. [2020-12-23 10:39:53,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3822 transitions. [2020-12-23 10:39:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 10:39:53,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:53,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:53,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:39:53,391 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2121579715, now seen corresponding path program 1 times [2020-12-23 10:39:53,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:53,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861510393] [2020-12-23 10:39:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:53,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861510393] [2020-12-23 10:39:53,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:53,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100980750] [2020-12-23 10:39:53,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:53,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:53,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:53,494 INFO L87 Difference]: Start difference. First operand 2669 states and 3822 transitions. Second operand 5 states. [2020-12-23 10:39:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:54,054 INFO L93 Difference]: Finished difference Result 7945 states and 11474 transitions. [2020-12-23 10:39:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:54,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-23 10:39:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:54,089 INFO L225 Difference]: With dead ends: 7945 [2020-12-23 10:39:54,090 INFO L226 Difference]: Without dead ends: 6331 [2020-12-23 10:39:54,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2020-12-23 10:39:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 3325. [2020-12-23 10:39:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3325 states. [2020-12-23 10:39:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4784 transitions. [2020-12-23 10:39:54,444 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4784 transitions. Word has length 54 [2020-12-23 10:39:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:54,445 INFO L481 AbstractCegarLoop]: Abstraction has 3325 states and 4784 transitions. [2020-12-23 10:39:54,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4784 transitions. [2020-12-23 10:39:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 10:39:54,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:54,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:54,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:39:54,448 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1977718599, now seen corresponding path program 1 times [2020-12-23 10:39:54,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:54,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345839763] [2020-12-23 10:39:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:54,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345839763] [2020-12-23 10:39:54,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:54,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502349279] [2020-12-23 10:39:54,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:39:54,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:54,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:39:54,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:39:54,570 INFO L87 Difference]: Start difference. First operand 3325 states and 4784 transitions. Second operand 5 states. [2020-12-23 10:39:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:55,266 INFO L93 Difference]: Finished difference Result 8592 states and 12418 transitions. [2020-12-23 10:39:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:55,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-23 10:39:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:55,326 INFO L225 Difference]: With dead ends: 8592 [2020-12-23 10:39:55,327 INFO L226 Difference]: Without dead ends: 6978 [2020-12-23 10:39:55,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:39:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-12-23 10:39:55,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 4130. [2020-12-23 10:39:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4130 states. [2020-12-23 10:39:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5970 transitions. [2020-12-23 10:39:55,752 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5970 transitions. Word has length 55 [2020-12-23 10:39:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:55,752 INFO L481 AbstractCegarLoop]: Abstraction has 4130 states and 5970 transitions. [2020-12-23 10:39:55,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:39:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5970 transitions. [2020-12-23 10:39:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 10:39:55,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:55,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:55,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:39:55,756 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1089404270, now seen corresponding path program 1 times [2020-12-23 10:39:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:55,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832564162] [2020-12-23 10:39:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:55,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832564162] [2020-12-23 10:39:55,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:55,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:39:55,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495810169] [2020-12-23 10:39:55,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:39:55,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:55,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:39:55,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:39:55,897 INFO L87 Difference]: Start difference. First operand 4130 states and 5970 transitions. Second operand 6 states. [2020-12-23 10:39:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:39:57,009 INFO L93 Difference]: Finished difference Result 13020 states and 18814 transitions. [2020-12-23 10:39:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:39:57,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-12-23 10:39:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:39:57,030 INFO L225 Difference]: With dead ends: 13020 [2020-12-23 10:39:57,030 INFO L226 Difference]: Without dead ends: 8932 [2020-12-23 10:39:57,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:39:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2020-12-23 10:39:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8866. [2020-12-23 10:39:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8866 states. [2020-12-23 10:39:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 12750 transitions. [2020-12-23 10:39:57,819 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 12750 transitions. Word has length 58 [2020-12-23 10:39:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:39:57,820 INFO L481 AbstractCegarLoop]: Abstraction has 8866 states and 12750 transitions. [2020-12-23 10:39:57,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 10:39:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 12750 transitions. [2020-12-23 10:39:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:39:57,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:39:57,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:39:57,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:39:57,824 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:39:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:39:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1572096567, now seen corresponding path program 1 times [2020-12-23 10:39:57,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:39:57,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344113402] [2020-12-23 10:39:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:39:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:39:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:39:57,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344113402] [2020-12-23 10:39:57,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:39:57,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:39:57,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752897581] [2020-12-23 10:39:57,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:39:57,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:39:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:39:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:39:57,977 INFO L87 Difference]: Start difference. First operand 8866 states and 12750 transitions. Second operand 7 states. [2020-12-23 10:40:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:01,504 INFO L93 Difference]: Finished difference Result 41460 states and 59369 transitions. [2020-12-23 10:40:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:40:01,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-12-23 10:40:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:01,608 INFO L225 Difference]: With dead ends: 41460 [2020-12-23 10:40:01,608 INFO L226 Difference]: Without dead ends: 38612 [2020-12-23 10:40:01,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 10:40:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38612 states. [2020-12-23 10:40:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38612 to 8878. [2020-12-23 10:40:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8878 states. [2020-12-23 10:40:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 12766 transitions. [2020-12-23 10:40:02,774 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 12766 transitions. Word has length 59 [2020-12-23 10:40:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:02,775 INFO L481 AbstractCegarLoop]: Abstraction has 8878 states and 12766 transitions. [2020-12-23 10:40:02,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:40:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 12766 transitions. [2020-12-23 10:40:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 10:40:02,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:02,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:02,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:40:02,779 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1131093665, now seen corresponding path program 1 times [2020-12-23 10:40:02,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:02,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730058962] [2020-12-23 10:40:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:02,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730058962] [2020-12-23 10:40:02,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:02,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:40:02,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539464893] [2020-12-23 10:40:02,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:40:02,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:02,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:40:02,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:40:02,879 INFO L87 Difference]: Start difference. First operand 8878 states and 12766 transitions. Second operand 7 states. [2020-12-23 10:40:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:06,446 INFO L93 Difference]: Finished difference Result 33372 states and 47566 transitions. [2020-12-23 10:40:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:40:06,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-12-23 10:40:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:06,512 INFO L225 Difference]: With dead ends: 33372 [2020-12-23 10:40:06,513 INFO L226 Difference]: Without dead ends: 29383 [2020-12-23 10:40:06,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 10:40:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29383 states. [2020-12-23 10:40:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29383 to 8898. [2020-12-23 10:40:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2020-12-23 10:40:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 12790 transitions. [2020-12-23 10:40:07,678 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 12790 transitions. Word has length 60 [2020-12-23 10:40:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:07,679 INFO L481 AbstractCegarLoop]: Abstraction has 8898 states and 12790 transitions. [2020-12-23 10:40:07,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:40:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 12790 transitions. [2020-12-23 10:40:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 10:40:07,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:07,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:07,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:40:07,682 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1840434496, now seen corresponding path program 1 times [2020-12-23 10:40:07,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:07,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727225758] [2020-12-23 10:40:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:07,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727225758] [2020-12-23 10:40:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:40:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265885655] [2020-12-23 10:40:07,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 10:40:07,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 10:40:07,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 10:40:07,788 INFO L87 Difference]: Start difference. First operand 8898 states and 12790 transitions. Second operand 7 states. [2020-12-23 10:40:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:12,725 INFO L93 Difference]: Finished difference Result 39144 states and 55928 transitions. [2020-12-23 10:40:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 10:40:12,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-12-23 10:40:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:12,780 INFO L225 Difference]: With dead ends: 39144 [2020-12-23 10:40:12,781 INFO L226 Difference]: Without dead ends: 35323 [2020-12-23 10:40:12,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 10:40:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2020-12-23 10:40:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 8976. [2020-12-23 10:40:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2020-12-23 10:40:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12890 transitions. [2020-12-23 10:40:14,043 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12890 transitions. Word has length 60 [2020-12-23 10:40:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:14,043 INFO L481 AbstractCegarLoop]: Abstraction has 8976 states and 12890 transitions. [2020-12-23 10:40:14,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 10:40:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12890 transitions. [2020-12-23 10:40:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:40:14,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:14,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:14,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:40:14,048 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:14,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1556118219, now seen corresponding path program 1 times [2020-12-23 10:40:14,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:14,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915665230] [2020-12-23 10:40:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:14,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915665230] [2020-12-23 10:40:14,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 10:40:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123381452] [2020-12-23 10:40:14,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 10:40:14,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 10:40:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 10:40:14,373 INFO L87 Difference]: Start difference. First operand 8976 states and 12890 transitions. Second operand 10 states. [2020-12-23 10:40:17,097 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-23 10:40:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:19,725 INFO L93 Difference]: Finished difference Result 30946 states and 44261 transitions. [2020-12-23 10:40:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 10:40:19,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-12-23 10:40:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:19,759 INFO L225 Difference]: With dead ends: 30946 [2020-12-23 10:40:19,760 INFO L226 Difference]: Without dead ends: 22872 [2020-12-23 10:40:19,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2020-12-23 10:40:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22872 states. [2020-12-23 10:40:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22872 to 8976. [2020-12-23 10:40:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2020-12-23 10:40:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12884 transitions. [2020-12-23 10:40:20,951 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12884 transitions. Word has length 62 [2020-12-23 10:40:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:20,951 INFO L481 AbstractCegarLoop]: Abstraction has 8976 states and 12884 transitions. [2020-12-23 10:40:20,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 10:40:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12884 transitions. [2020-12-23 10:40:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:40:20,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:20,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:20,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:40:20,956 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash -443125389, now seen corresponding path program 1 times [2020-12-23 10:40:20,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:20,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986351875] [2020-12-23 10:40:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:21,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986351875] [2020-12-23 10:40:21,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:21,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 10:40:21,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775982727] [2020-12-23 10:40:21,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 10:40:21,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 10:40:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 10:40:21,267 INFO L87 Difference]: Start difference. First operand 8976 states and 12884 transitions. Second operand 10 states. [2020-12-23 10:40:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:27,399 INFO L93 Difference]: Finished difference Result 30322 states and 43433 transitions. [2020-12-23 10:40:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 10:40:27,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-12-23 10:40:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:27,426 INFO L225 Difference]: With dead ends: 30322 [2020-12-23 10:40:27,426 INFO L226 Difference]: Without dead ends: 22508 [2020-12-23 10:40:27,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2020-12-23 10:40:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22508 states. [2020-12-23 10:40:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22508 to 8851. [2020-12-23 10:40:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8851 states. [2020-12-23 10:40:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 12695 transitions. [2020-12-23 10:40:28,809 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 12695 transitions. Word has length 62 [2020-12-23 10:40:28,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:28,809 INFO L481 AbstractCegarLoop]: Abstraction has 8851 states and 12695 transitions. [2020-12-23 10:40:28,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 10:40:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 12695 transitions. [2020-12-23 10:40:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 10:40:28,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:28,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:28,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:40:28,814 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:28,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1162737396, now seen corresponding path program 1 times [2020-12-23 10:40:28,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:28,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175093965] [2020-12-23 10:40:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:29,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175093965] [2020-12-23 10:40:29,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:29,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 10:40:29,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276437976] [2020-12-23 10:40:29,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 10:40:29,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 10:40:29,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 10:40:29,063 INFO L87 Difference]: Start difference. First operand 8851 states and 12695 transitions. Second operand 10 states. [2020-12-23 10:40:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:35,254 INFO L93 Difference]: Finished difference Result 31534 states and 45157 transitions. [2020-12-23 10:40:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 10:40:35,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-12-23 10:40:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:35,278 INFO L225 Difference]: With dead ends: 31534 [2020-12-23 10:40:35,278 INFO L226 Difference]: Without dead ends: 23616 [2020-12-23 10:40:35,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-12-23 10:40:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23616 states. [2020-12-23 10:40:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23616 to 8680. [2020-12-23 10:40:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8680 states. [2020-12-23 10:40:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 12443 transitions. [2020-12-23 10:40:36,629 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 12443 transitions. Word has length 62 [2020-12-23 10:40:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:36,629 INFO L481 AbstractCegarLoop]: Abstraction has 8680 states and 12443 transitions. [2020-12-23 10:40:36,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 10:40:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 12443 transitions. [2020-12-23 10:40:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:40:36,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:36,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:36,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:40:36,633 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1143949417, now seen corresponding path program 1 times [2020-12-23 10:40:36,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:36,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012730535] [2020-12-23 10:40:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:36,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012730535] [2020-12-23 10:40:36,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:36,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:40:36,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995888733] [2020-12-23 10:40:36,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:40:36,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:36,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:40:36,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:36,681 INFO L87 Difference]: Start difference. First operand 8680 states and 12443 transitions. Second operand 3 states. [2020-12-23 10:40:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:38,047 INFO L93 Difference]: Finished difference Result 12476 states and 17864 transitions. [2020-12-23 10:40:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:40:38,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:40:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:38,056 INFO L225 Difference]: With dead ends: 12476 [2020-12-23 10:40:38,056 INFO L226 Difference]: Without dead ends: 8667 [2020-12-23 10:40:38,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8667 states. [2020-12-23 10:40:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8667 to 8665. [2020-12-23 10:40:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8665 states. [2020-12-23 10:40:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8665 states to 8665 states and 12236 transitions. [2020-12-23 10:40:39,297 INFO L78 Accepts]: Start accepts. Automaton has 8665 states and 12236 transitions. Word has length 63 [2020-12-23 10:40:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:39,298 INFO L481 AbstractCegarLoop]: Abstraction has 8665 states and 12236 transitions. [2020-12-23 10:40:39,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:40:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 8665 states and 12236 transitions. [2020-12-23 10:40:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:40:39,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:39,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:39,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 10:40:39,301 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1363691260, now seen corresponding path program 1 times [2020-12-23 10:40:39,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:39,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307538357] [2020-12-23 10:40:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:39,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307538357] [2020-12-23 10:40:39,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:39,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:40:39,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136556439] [2020-12-23 10:40:39,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:40:39,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:39,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:40:39,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:39,350 INFO L87 Difference]: Start difference. First operand 8665 states and 12236 transitions. Second operand 3 states. [2020-12-23 10:40:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:40,634 INFO L93 Difference]: Finished difference Result 11463 states and 16151 transitions. [2020-12-23 10:40:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:40:40,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:40:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:40,642 INFO L225 Difference]: With dead ends: 11463 [2020-12-23 10:40:40,642 INFO L226 Difference]: Without dead ends: 7668 [2020-12-23 10:40:40,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2020-12-23 10:40:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 7666. [2020-12-23 10:40:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7666 states. [2020-12-23 10:40:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 10631 transitions. [2020-12-23 10:40:41,754 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 10631 transitions. Word has length 63 [2020-12-23 10:40:41,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:41,755 INFO L481 AbstractCegarLoop]: Abstraction has 7666 states and 10631 transitions. [2020-12-23 10:40:41,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:40:41,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 10631 transitions. [2020-12-23 10:40:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:40:41,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:41,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:41,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 10:40:41,762 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1254313906, now seen corresponding path program 1 times [2020-12-23 10:40:41,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:41,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502301430] [2020-12-23 10:40:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:41,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502301430] [2020-12-23 10:40:41,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:41,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:40:41,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070466464] [2020-12-23 10:40:41,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:40:41,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:40:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:41,815 INFO L87 Difference]: Start difference. First operand 7666 states and 10631 transitions. Second operand 3 states. [2020-12-23 10:40:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:40:43,428 INFO L93 Difference]: Finished difference Result 9342 states and 12899 transitions. [2020-12-23 10:40:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:40:43,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 10:40:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:40:43,439 INFO L225 Difference]: With dead ends: 9342 [2020-12-23 10:40:43,439 INFO L226 Difference]: Without dead ends: 6658 [2020-12-23 10:40:43,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:40:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2020-12-23 10:40:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 6656. [2020-12-23 10:40:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6656 states. [2020-12-23 10:40:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9031 transitions. [2020-12-23 10:40:44,399 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9031 transitions. Word has length 63 [2020-12-23 10:40:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:40:44,399 INFO L481 AbstractCegarLoop]: Abstraction has 6656 states and 9031 transitions. [2020-12-23 10:40:44,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:40:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9031 transitions. [2020-12-23 10:40:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:40:44,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:40:44,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:40:44,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 10:40:44,402 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:40:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:40:44,403 INFO L82 PathProgramCache]: Analyzing trace with hash -424034558, now seen corresponding path program 1 times [2020-12-23 10:40:44,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:40:44,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968229498] [2020-12-23 10:40:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:40:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:40:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:40:45,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968229498] [2020-12-23 10:40:45,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:40:45,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-23 10:40:45,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517582205] [2020-12-23 10:40:45,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 10:40:45,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:40:45,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 10:40:45,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-12-23 10:40:45,681 INFO L87 Difference]: Start difference. First operand 6656 states and 9031 transitions. Second operand 23 states. [2020-12-23 10:40:46,078 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-23 10:40:46,454 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-12-23 10:40:46,622 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-23 10:40:47,037 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-23 10:40:47,236 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-23 10:40:47,671 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 10:40:48,026 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 10:40:48,693 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-12-23 10:40:49,136 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-12-23 10:40:49,389 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-23 10:40:49,730 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-23 10:40:50,141 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-23 10:40:50,539 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-23 10:40:50,909 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-23 10:40:51,216 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-23 10:40:51,491 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-23 10:40:51,902 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-23 10:40:52,070 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-23 10:40:56,490 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-23 10:41:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:00,740 INFO L93 Difference]: Finished difference Result 21942 states and 30142 transitions. [2020-12-23 10:41:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 10:41:00,741 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-12-23 10:41:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:00,762 INFO L225 Difference]: With dead ends: 21942 [2020-12-23 10:41:00,762 INFO L226 Difference]: Without dead ends: 21560 [2020-12-23 10:41:00,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=380, Invalid=1600, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 10:41:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2020-12-23 10:41:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 6638. [2020-12-23 10:41:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6638 states. [2020-12-23 10:41:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 9006 transitions. [2020-12-23 10:41:01,957 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 9006 transitions. Word has length 64 [2020-12-23 10:41:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:01,957 INFO L481 AbstractCegarLoop]: Abstraction has 6638 states and 9006 transitions. [2020-12-23 10:41:01,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 10:41:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 9006 transitions. [2020-12-23 10:41:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:41:01,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:01,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:41:01,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 10:41:01,960 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:01,961 INFO L82 PathProgramCache]: Analyzing trace with hash 250019910, now seen corresponding path program 1 times [2020-12-23 10:41:01,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:01,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075504159] [2020-12-23 10:41:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:03,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075504159] [2020-12-23 10:41:03,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:41:03,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-23 10:41:03,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851297166] [2020-12-23 10:41:03,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 10:41:03,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:03,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 10:41:03,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-12-23 10:41:03,405 INFO L87 Difference]: Start difference. First operand 6638 states and 9006 transitions. Second operand 23 states. [2020-12-23 10:41:03,955 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-12-23 10:41:04,454 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-23 10:41:04,621 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-23 10:41:04,847 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-23 10:41:05,061 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 10:41:05,418 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-23 10:41:05,701 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-23 10:41:06,376 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 10:41:06,921 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-23 10:41:07,848 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-12-23 10:41:08,551 WARN L197 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-12-23 10:41:08,899 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-23 10:41:09,345 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-23 10:41:09,847 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-23 10:41:10,367 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-12-23 10:41:10,835 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 10:41:11,238 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-23 10:41:11,525 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-23 10:41:11,879 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-23 10:41:12,213 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-23 10:41:12,451 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-12-23 10:41:15,363 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-23 10:41:19,045 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-12-23 10:41:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:22,997 INFO L93 Difference]: Finished difference Result 28856 states and 39681 transitions. [2020-12-23 10:41:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 10:41:22,998 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-12-23 10:41:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:23,027 INFO L225 Difference]: With dead ends: 28856 [2020-12-23 10:41:23,027 INFO L226 Difference]: Without dead ends: 28474 [2020-12-23 10:41:23,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 10:41:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28474 states. [2020-12-23 10:41:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28474 to 6620. [2020-12-23 10:41:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6620 states. [2020-12-23 10:41:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6620 states to 6620 states and 8981 transitions. [2020-12-23 10:41:24,517 INFO L78 Accepts]: Start accepts. Automaton has 6620 states and 8981 transitions. Word has length 64 [2020-12-23 10:41:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:24,517 INFO L481 AbstractCegarLoop]: Abstraction has 6620 states and 8981 transitions. [2020-12-23 10:41:24,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 10:41:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6620 states and 8981 transitions. [2020-12-23 10:41:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:41:24,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:24,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:41:24,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 10:41:24,520 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:24,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1940234754, now seen corresponding path program 1 times [2020-12-23 10:41:24,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:24,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268554218] [2020-12-23 10:41:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:26,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268554218] [2020-12-23 10:41:26,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:41:26,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-23 10:41:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450984911] [2020-12-23 10:41:26,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 10:41:26,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 10:41:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-12-23 10:41:26,249 INFO L87 Difference]: Start difference. First operand 6620 states and 8981 transitions. Second operand 23 states. [2020-12-23 10:41:26,707 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-12-23 10:41:26,906 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2020-12-23 10:41:27,099 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-23 10:41:27,363 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-23 10:41:27,596 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 10:41:27,858 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-23 10:41:28,110 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-12-23 10:41:28,515 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-23 10:41:28,838 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-23 10:41:29,444 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-12-23 10:41:29,940 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-23 10:41:30,868 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-12-23 10:41:31,535 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-12-23 10:41:31,929 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-23 10:41:32,439 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-23 10:41:32,754 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-12-23 10:41:33,326 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-12-23 10:41:33,771 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-23 10:41:34,341 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 10:41:34,638 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-23 10:41:35,040 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-12-23 10:41:35,440 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-23 10:41:36,111 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-23 10:41:36,371 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 10:41:38,548 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 10:41:40,615 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-23 10:41:41,279 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-23 10:41:42,794 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-23 10:41:45,488 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-12-23 10:41:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:49,476 INFO L93 Difference]: Finished difference Result 23967 states and 32915 transitions. [2020-12-23 10:41:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 10:41:49,479 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 64 [2020-12-23 10:41:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:49,505 INFO L225 Difference]: With dead ends: 23967 [2020-12-23 10:41:49,505 INFO L226 Difference]: Without dead ends: 23585 [2020-12-23 10:41:49,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=446, Invalid=2206, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 10:41:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23585 states. [2020-12-23 10:41:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23585 to 6632. [2020-12-23 10:41:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6632 states. [2020-12-23 10:41:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8996 transitions. [2020-12-23 10:41:51,049 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8996 transitions. Word has length 64 [2020-12-23 10:41:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:51,050 INFO L481 AbstractCegarLoop]: Abstraction has 6632 states and 8996 transitions. [2020-12-23 10:41:51,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 10:41:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8996 transitions. [2020-12-23 10:41:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:41:51,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:51,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:41:51,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 10:41:51,053 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:51,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1380487795, now seen corresponding path program 1 times [2020-12-23 10:41:51,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:51,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816424110] [2020-12-23 10:41:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:51,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816424110] [2020-12-23 10:41:51,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:41:51,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:41:51,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018822031] [2020-12-23 10:41:51,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:41:51,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:51,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:41:51,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:41:51,091 INFO L87 Difference]: Start difference. First operand 6632 states and 8996 transitions. Second operand 3 states. [2020-12-23 10:41:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:53,446 INFO L93 Difference]: Finished difference Result 12107 states and 16514 transitions. [2020-12-23 10:41:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:41:53,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:41:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:53,457 INFO L225 Difference]: With dead ends: 12107 [2020-12-23 10:41:53,457 INFO L226 Difference]: Without dead ends: 9607 [2020-12-23 10:41:53,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:41:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2020-12-23 10:41:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 6532. [2020-12-23 10:41:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2020-12-23 10:41:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8850 transitions. [2020-12-23 10:41:55,082 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8850 transitions. Word has length 64 [2020-12-23 10:41:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:55,083 INFO L481 AbstractCegarLoop]: Abstraction has 6532 states and 8850 transitions. [2020-12-23 10:41:55,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:41:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8850 transitions. [2020-12-23 10:41:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:41:55,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:55,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:41:55,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 10:41:55,085 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1914859187, now seen corresponding path program 1 times [2020-12-23 10:41:55,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:55,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056004071] [2020-12-23 10:41:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:41:55,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056004071] [2020-12-23 10:41:55,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:41:55,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:41:55,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834518407] [2020-12-23 10:41:55,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:41:55,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:41:55,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:41:55,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:41:55,126 INFO L87 Difference]: Start difference. First operand 6532 states and 8850 transitions. Second operand 3 states. [2020-12-23 10:41:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:41:57,597 INFO L93 Difference]: Finished difference Result 11971 states and 16310 transitions. [2020-12-23 10:41:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:41:57,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:41:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:41:57,609 INFO L225 Difference]: With dead ends: 11971 [2020-12-23 10:41:57,609 INFO L226 Difference]: Without dead ends: 9437 [2020-12-23 10:41:57,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:41:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2020-12-23 10:41:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 6362. [2020-12-23 10:41:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6362 states. [2020-12-23 10:41:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8618 transitions. [2020-12-23 10:41:59,287 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8618 transitions. Word has length 64 [2020-12-23 10:41:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:41:59,287 INFO L481 AbstractCegarLoop]: Abstraction has 6362 states and 8618 transitions. [2020-12-23 10:41:59,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:41:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8618 transitions. [2020-12-23 10:41:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:41:59,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:41:59,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:41:59,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 10:41:59,289 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:41:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:41:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1138559632, now seen corresponding path program 1 times [2020-12-23 10:41:59,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:41:59,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117723230] [2020-12-23 10:41:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:41:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:41:59,768 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-23 10:42:00,009 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-12-23 10:42:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:42:00,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117723230] [2020-12-23 10:42:00,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:42:00,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-12-23 10:42:00,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189355884] [2020-12-23 10:42:00,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 10:42:00,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:42:00,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 10:42:00,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-12-23 10:42:00,323 INFO L87 Difference]: Start difference. First operand 6362 states and 8618 transitions. Second operand 17 states. [2020-12-23 10:42:00,473 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-12-23 10:42:01,126 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-12-23 10:42:01,346 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-23 10:42:01,651 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-23 10:42:01,959 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 10:42:02,280 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-23 10:42:02,656 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-23 10:42:03,000 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 10:42:03,363 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-23 10:42:03,596 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 10:42:03,999 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 10:42:04,295 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 10:42:04,571 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-23 10:42:04,887 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-12-23 10:42:05,199 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-12-23 10:42:05,646 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-23 10:42:05,871 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-23 10:42:06,234 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-23 10:42:06,505 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-12-23 10:42:06,803 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 10:42:07,192 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 10:42:12,568 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-23 10:42:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:42:16,801 INFO L93 Difference]: Finished difference Result 24658 states and 33764 transitions. [2020-12-23 10:42:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-23 10:42:16,802 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-12-23 10:42:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:42:16,827 INFO L225 Difference]: With dead ends: 24658 [2020-12-23 10:42:16,827 INFO L226 Difference]: Without dead ends: 23570 [2020-12-23 10:42:16,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 10:42:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23570 states. [2020-12-23 10:42:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23570 to 6300. [2020-12-23 10:42:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-12-23 10:42:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8535 transitions. [2020-12-23 10:42:18,855 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8535 transitions. Word has length 65 [2020-12-23 10:42:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:42:18,855 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 8535 transitions. [2020-12-23 10:42:18,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 10:42:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8535 transitions. [2020-12-23 10:42:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:42:18,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:42:18,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:42:18,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 10:42:18,858 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:42:18,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:42:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1339466768, now seen corresponding path program 1 times [2020-12-23 10:42:18,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:42:18,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14280434] [2020-12-23 10:42:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:42:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:42:19,515 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-23 10:42:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:42:20,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14280434] [2020-12-23 10:42:20,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:42:20,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-23 10:42:20,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481478111] [2020-12-23 10:42:20,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 10:42:20,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:42:20,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 10:42:20,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-12-23 10:42:20,275 INFO L87 Difference]: Start difference. First operand 6300 states and 8535 transitions. Second operand 18 states. [2020-12-23 10:42:20,511 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 10:42:20,690 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-12-23 10:42:20,914 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 10:42:21,153 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 10:42:21,469 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 10:42:21,772 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 10:42:22,189 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 10:42:22,545 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-23 10:42:23,408 WARN L197 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-12-23 10:42:24,292 WARN L197 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-12-23 10:42:24,685 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 10:42:25,338 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 10:42:25,544 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-23 10:42:26,011 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 10:42:26,582 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-23 10:42:27,284 WARN L197 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-23 10:42:27,622 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-23 10:42:28,315 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-12-23 10:42:28,778 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-23 10:42:29,158 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-12-23 10:42:29,592 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-12-23 10:42:29,960 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-12-23 10:42:30,374 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-12-23 10:42:30,844 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 10:42:32,857 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-23 10:42:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:42:44,961 INFO L93 Difference]: Finished difference Result 26181 states and 35896 transitions. [2020-12-23 10:42:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 10:42:44,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-12-23 10:42:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:42:44,989 INFO L225 Difference]: With dead ends: 26181 [2020-12-23 10:42:44,989 INFO L226 Difference]: Without dead ends: 25571 [2020-12-23 10:42:44,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 10:42:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25571 states. [2020-12-23 10:42:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25571 to 6242. [2020-12-23 10:42:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6242 states. [2020-12-23 10:42:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 8458 transitions. [2020-12-23 10:42:47,424 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 8458 transitions. Word has length 65 [2020-12-23 10:42:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:42:47,424 INFO L481 AbstractCegarLoop]: Abstraction has 6242 states and 8458 transitions. [2020-12-23 10:42:47,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 10:42:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 8458 transitions. [2020-12-23 10:42:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:42:47,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:42:47,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:42:47,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 10:42:47,427 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:42:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:42:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash -427633856, now seen corresponding path program 1 times [2020-12-23 10:42:47,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:42:47,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989353336] [2020-12-23 10:42:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:42:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:42:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:42:47,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989353336] [2020-12-23 10:42:47,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:42:47,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:42:47,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622567844] [2020-12-23 10:42:47,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:42:47,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:42:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:42:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:42:47,525 INFO L87 Difference]: Start difference. First operand 6242 states and 8458 transitions. Second operand 5 states. [2020-12-23 10:42:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:42:49,720 INFO L93 Difference]: Finished difference Result 6248 states and 8461 transitions. [2020-12-23 10:42:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:42:49,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 10:42:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:42:49,727 INFO L225 Difference]: With dead ends: 6248 [2020-12-23 10:42:49,727 INFO L226 Difference]: Without dead ends: 5868 [2020-12-23 10:42:49,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:42:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2020-12-23 10:42:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5864. [2020-12-23 10:42:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5864 states. [2020-12-23 10:42:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7962 transitions. [2020-12-23 10:42:51,738 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7962 transitions. Word has length 68 [2020-12-23 10:42:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:42:51,738 INFO L481 AbstractCegarLoop]: Abstraction has 5864 states and 7962 transitions. [2020-12-23 10:42:51,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:42:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7962 transitions. [2020-12-23 10:42:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 10:42:51,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:42:51,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:42:51,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 10:42:51,740 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:42:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:42:51,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1513353753, now seen corresponding path program 1 times [2020-12-23 10:42:51,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:42:51,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81398026] [2020-12-23 10:42:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:42:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:42:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:42:51,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81398026] [2020-12-23 10:42:51,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:42:51,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:42:51,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660069675] [2020-12-23 10:42:51,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:42:51,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:42:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:42:51,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:42:51,794 INFO L87 Difference]: Start difference. First operand 5864 states and 7962 transitions. Second operand 3 states. [2020-12-23 10:42:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:42:55,660 INFO L93 Difference]: Finished difference Result 15889 states and 21668 transitions. [2020-12-23 10:42:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:42:55,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-23 10:42:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:42:55,672 INFO L225 Difference]: With dead ends: 15889 [2020-12-23 10:42:55,672 INFO L226 Difference]: Without dead ends: 10624 [2020-12-23 10:42:55,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:42:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2020-12-23 10:42:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 9942. [2020-12-23 10:42:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9942 states. [2020-12-23 10:42:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9942 states to 9942 states and 13474 transitions. [2020-12-23 10:42:59,286 INFO L78 Accepts]: Start accepts. Automaton has 9942 states and 13474 transitions. Word has length 71 [2020-12-23 10:42:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:42:59,286 INFO L481 AbstractCegarLoop]: Abstraction has 9942 states and 13474 transitions. [2020-12-23 10:42:59,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:42:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9942 states and 13474 transitions. [2020-12-23 10:42:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 10:42:59,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:42:59,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:42:59,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 10:42:59,288 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:42:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:42:59,289 INFO L82 PathProgramCache]: Analyzing trace with hash 87467842, now seen corresponding path program 1 times [2020-12-23 10:42:59,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:42:59,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785961559] [2020-12-23 10:42:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:42:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:42:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:42:59,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785961559] [2020-12-23 10:42:59,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:42:59,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:42:59,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839893813] [2020-12-23 10:42:59,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:42:59,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:42:59,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:42:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:42:59,338 INFO L87 Difference]: Start difference. First operand 9942 states and 13474 transitions. Second operand 3 states. [2020-12-23 10:43:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:06,144 INFO L93 Difference]: Finished difference Result 27618 states and 37414 transitions. [2020-12-23 10:43:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:06,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 10:43:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:06,170 INFO L225 Difference]: With dead ends: 27618 [2020-12-23 10:43:06,171 INFO L226 Difference]: Without dead ends: 18275 [2020-12-23 10:43:06,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18275 states. [2020-12-23 10:43:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18275 to 16913. [2020-12-23 10:43:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16913 states. [2020-12-23 10:43:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 22763 transitions. [2020-12-23 10:43:12,335 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 22763 transitions. Word has length 72 [2020-12-23 10:43:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:12,335 INFO L481 AbstractCegarLoop]: Abstraction has 16913 states and 22763 transitions. [2020-12-23 10:43:12,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 22763 transitions. [2020-12-23 10:43:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:43:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:12,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:43:12,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 10:43:12,338 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1178358807, now seen corresponding path program 1 times [2020-12-23 10:43:12,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855664652] [2020-12-23 10:43:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:12,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855664652] [2020-12-23 10:43:12,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:12,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:43:12,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299384728] [2020-12-23 10:43:12,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:43:12,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:12,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:43:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:12,435 INFO L87 Difference]: Start difference. First operand 16913 states and 22763 transitions. Second operand 3 states. [2020-12-23 10:43:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:43:24,653 INFO L93 Difference]: Finished difference Result 47317 states and 63393 transitions. [2020-12-23 10:43:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:43:24,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:43:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:43:24,690 INFO L225 Difference]: With dead ends: 47317 [2020-12-23 10:43:24,690 INFO L226 Difference]: Without dead ends: 30879 [2020-12-23 10:43:24,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:43:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30879 states. [2020-12-23 10:43:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30879 to 28389. [2020-12-23 10:43:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28389 states. [2020-12-23 10:43:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28389 states to 28389 states and 37789 transitions. [2020-12-23 10:43:35,667 INFO L78 Accepts]: Start accepts. Automaton has 28389 states and 37789 transitions. Word has length 74 [2020-12-23 10:43:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:43:35,667 INFO L481 AbstractCegarLoop]: Abstraction has 28389 states and 37789 transitions. [2020-12-23 10:43:35,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:43:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 28389 states and 37789 transitions. [2020-12-23 10:43:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 10:43:35,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:43:35,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:43:35,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 10:43:35,669 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:43:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:43:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1504202340, now seen corresponding path program 1 times [2020-12-23 10:43:35,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:43:35,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213226850] [2020-12-23 10:43:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:43:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:43:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:43:35,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213226850] [2020-12-23 10:43:35,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:43:35,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 10:43:35,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404819754] [2020-12-23 10:43:35,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 10:43:35,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:43:35,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 10:43:35,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 10:43:35,861 INFO L87 Difference]: Start difference. First operand 28389 states and 37789 transitions. Second operand 6 states. [2020-12-23 10:44:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:44:00,364 INFO L93 Difference]: Finished difference Result 57869 states and 75871 transitions. [2020-12-23 10:44:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 10:44:00,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-23 10:44:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:44:00,430 INFO L225 Difference]: With dead ends: 57869 [2020-12-23 10:44:00,430 INFO L226 Difference]: Without dead ends: 57867 [2020-12-23 10:44:00,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 10:44:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57867 states.